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Broad-bodied Chaser
''Libellula depressa'', the broad-bodied chaser or broad-bodied darter,Hart. M., et al, (1978), ''The Naturetrail Omnibus'', London: Usborne Publishing Limited, page 157 is one of the most common dragonflies in Europe and central Asia. It is very distinctive with a very broad flattened abdomen, four wing patches and, in the male, the abdomen becomes pruinose blue. Identification The male and female have a broad, flattened abdomen which is brown with yellow patches down the sides. In the male the abdomen develops a blue pruinosity that covers the brown colour. Both fore and hind wings have a dark patch at the base. Both the male and female have broad antehumeral stripes. The average wingspan is approximately 70 mm. ''L. depressa'' is very distinctive and should not be confused with any other dragonflies in the region. Distribution and habitat ''L. depressa'' is found in central and southern Europe, central Asia and the Middle East. It range extends northwards to so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wolvercote
Wolvercote is a village that is part of the City of Oxford, England. It is about northwest of the city centre, on the northern edge of Wolvercote Common, which is itself north of Port Meadow and adjoins the River Thames. History The Domesday Book of 1086 lists the village as ''Ulfgarcote'' (cottage of Woolgar; or Woolgar's place). The toponym had become "Wolvercote" by 1185. Wolvercote housing faced onto its extensive commons, which provided much of the community's livelihood. Some residents still have ancient rights on the commons. Geese rearing was once an important local activity, and a goose is still one of the village symbols. Horses and cattle are still grazed on Wolvercote Common and Port Meadow. In 1789 the Oxford Canal divided the village into two parts, and in 1846 the Oxford and Rugby Railway was built beside the canal through the village. In 1850 the Buckinghamshire Railway was completed through a tunnel and cutting along the eastern edge of Upper Wolvercote. The we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Menorca
Menorca or Minorca (from la, Insula Minor, , smaller island, later ''Minorica'') is one of the Balearic Islands located in the Mediterranean Sea belonging to Spain. Its name derives from its size, contrasting it with nearby Majorca. Its capital is Mahón ( ca, Maó), situated on the island's eastern end, although Menorca is not a province and forms a political union with the other islands in the archipelago. Ciutadella and Mahon are the main ports and largest towns. The port of Mahon is the second biggest natural port in the world. Menorca has a population of approximately 93,397 (at 1 January 2019). It is located 39°47' to 40°00'N, 3°52' to 4°24'E. Its highest point, called El Toro (from Catalan "''turó''" meaning ''hill''), is above sea level. History The island is known for its collection of megalithic stone monuments: ''navetes'', ''taules'' and ''talaiots'', which indicate very early prehistoric human activity. Some of the earliest culture on Menorca was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Carl Linnaeus
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odonata Of Asia
Odonata is an order of flying insects that includes the dragonflies and damselflies. Members of the group first appeared during the Triassic, though members of their total group, Odonatoptera, first appeared in Late Carboniferous. The two common groups are distinguished with dragonflies, placed in the suborder Epiprocta, usually being larger, with eyes together and wings up or out at rest, while damselflies, suborder Zygoptera, are usually smaller with eyes placed apart and wings along body at rest. All Odonata have aquatic larvae called naiads (nymphs), and all of them, larvae and adults, are carnivorous. The adults can land, but rarely walk. Their legs are specialised for catching prey. They are almost entirely insectivorous. Etymology and terminology Fabricius coined the term ''Odonata'' in 1793 from the Ancient Greek ( Ionic form of ) 'tooth'. One hypothesis is that it was because their maxillae are notably toothed. Most insects also have toothed mandibles. The wor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dragonflies Of Europe
A dragonfly is a flying insect belonging to the infraorder Anisoptera below the order Odonata. About 3,000 extant species of true dragonfly are known. Most are tropical, with fewer species in temperate regions. Loss of wetland habitat threatens dragonfly populations around the world. Adult dragonflies are characterized by a pair of large, multifaceted compound eyes, two pairs of strong, transparent wings, sometimes with coloured patches, and an elongated body. Many dragonflies have brilliant iridescent or metallic colours produced by structural colouration, making them conspicuous in flight. An adult dragonfly's compound eyes have nearly 24,000 ommatidia each. Dragonflies can be mistaken for the closely related damselflies, which make up the other odonatan infraorder ( Zygoptera) and are similar in body plan though usually lighter in build; however, the wings of most dragonflies are held flat and away from the body, while damselflies hold their wings folded at rest, along or a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portable Document Format
Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.Adobe Systems IncorporatedPDF Reference, Sixth edition, version 1.23 (53 MB) Nov 2006, p. 33. Archiv/ref> Based on the PostScript language, each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, vector graphics, raster images and other information needed to display it. PDF has its roots in "The Camelot Project" initiated by Adobe co-founder John Warnock in 1991. PDF was standardized as ISO 32000 in 2008. The last edition as ISO 32000-2:2020 was published in December 2020. PDF files may contain a variety of content besides flat text and graphics including logical structuring elements, interactive elements such as annotations and form-fields, layers, rich media (including video con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Phylogenetics And Evolution
''Molecular Phylogenetics and Evolution'' is a peer-reviewed scientific journal of evolutionary biology and phylogenetics. The journal is edited by E.A. Zimmer. Indexing The journal is indexed in: *EMBiology *Journal Citation Reports *Scopus Scopus is Elsevier's abstract and citation database launched in 2004. Scopus covers nearly 36,377 titles (22,794 active titles and 13,583 inactive titles) from approximately 11,678 publishers, of which 34,346 are peer-reviewed journals in top-l ... * Web of Science External links * Elsevier academic journals Evolutionary biology journals Phylogenetics Molecular biology Publications established in 1992 Monthly journals {{biology-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Dragonfly Society
The British Dragonfly Society is a conservation organisation in the United Kingdom. It was founded in 1983 and its aims are to promote and to encourage the study and conservation of dragonflies and damselflies and their natural habitats, especially in the United Kingdom. The Society runs the Dragonfly Recording Network (DRN) to collect Odonata records in the UK. It also promotes a range of research and conservation projects. The British Dragonfly Society is a registered charity, number 800196. See also *Odonata *List of British dragonflies There are 57 recorded species of Odonata in Britain, made up of 21 damselflies (suborder Zygoptera) and 36 dragonflies (suborder Anisoptera). Of these, 42 species (17 damselflies and 25 dragonflies) are resident breeders, and the remainder are ... References External links *Worldwide Dragonfly Association [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of British Dragonflies
There are 57 recorded species of Odonata in Britain, made up of 21 damselflies (suborder Zygoptera) and 36 dragonflies (suborder Anisoptera). Of these, 42 species (17 damselflies and 25 dragonflies) are resident breeders, and the remainder are either extinct species, or vagrants - in respect of the latter, this list follows the decisions of the Odonata Records Committee. Some of these rare species have not been seen since the 19th Century; however, the British Odonata list is also currently undergoing a period of unprecedented change, as new species are being discovered for the first time, some going on to become breeding species. This list is based on the following principal references: * Merritt, R., N. W. Moore and B. C. Eversham (1996), '' Atlas of the dragonflies of Britain and Ireland'', HMSO () * Parr, A. J. (1996), Dragonfly movement and migration in Britain and Ireland, ''Journal of the British Dragonfly Society'' Vol. 12 No. 2 pp. 33–50 * Parr, Adrian (2000a), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Libellulidae
The skimmers or perchers and their relatives form the Libellulidae, the largest dragonfly family in the world. It is sometimes considered to contain the Corduliidae as the subfamily Corduliinae and the Macromiidae as the subfamily Macromiinae. Even if these are excluded (as Silsby does), there remains a family of over 1000 species. With nearly worldwide distribution, these are almost certainly the most often seen of all dragonflies. The genus ''Libellula'' is mostly New World, but also has one of the few endangered odonates from Japan: ''Libellula angelina''. Many of the members of this genus are brightly colored or have banded wings. The related genus ''Plathemis'' includes the whitetails. The genus ''Celithemis'' contains several brightly marked species in the southern United States. Members of the genus ''Sympetrum'' are called darters (or meadowhawks in North America) and are found throughout most of the world, except Australia. Several Southern Hemisphere species in the gene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ladona
''Libellula'' is a genus of dragonflies, commonly called skimmers, in the family Libellulidae, distributed throughout the temperate zone of the Northern Hemisphere. Most species are found in the United States, where they are the best-known large dragonflies, often seen flying over freshwater ponds in summer. Many have showy wing patterns. Overview The taxa ''Ladona'' (corporals) and ''Plathemis'' (whitetails) have been considered as synonyms of ''Libellula'', subgenera, or separate genera by different authorities. Recent phylogenetic analysis has supported their status as either subgenera or full genera. Species List of species. funet.fi Extant species ''Ladona'' ''Plathemis'' Fossils *'' |
Libellula
''Libellula'' is a genus of dragonflies, commonly called skimmers, in the family Libellulidae, distributed throughout the temperate zone of the Northern Hemisphere. Most species are found in the United States, where they are the best-known large dragonflies, often seen flying over freshwater ponds in summer. Many have showy wing patterns. Overview The taxa ''Ladona'' (corporals) and ''Plathemis'' (whitetails) have been considered as synonyms of ''Libellula'', subgenera, or separate genera by different authorities. Recent phylogenetic analysis has supported their status as either subgenera or full genera. Species List of species. funet.fi Extant species ''Ladona'' ''Plathemis'' Fossils *'' |
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